Fusion 8 Beta on trashcan mac

Hi
I am trying to load image sequences into Fusion 8 Beta on a trashcan mac. These are Nikon .NEF files converted in Lightroom to .DNG - but the same thing happens with JPGs. It seems only .mov files load properly.
Images seem to load up but then do not display:
The same thing happens whether I use Loader or Import. This is not happening on my 15" Retina MBP with exactly the same files.
I am a newbie to this, but it's a brand-new install on both machines. I've fixed permissions on the trashcan mac.
Thanks in advance!
I am trying to load image sequences into Fusion 8 Beta on a trashcan mac. These are Nikon .NEF files converted in Lightroom to .DNG - but the same thing happens with JPGs. It seems only .mov files load properly.
Images seem to load up but then do not display:
Loader1 failed to load file "/Volumes/8TB_Drive/160119_Dubai/originals/DNG/642738077.dng" (clip "/Volumes/8TB_Drive/160119_Dubai/originals/DNG/1601181923300652.dng" at frame 0) : No such file or directory
Loader1 failed at time 0
The same thing happens whether I use Loader or Import. This is not happening on my 15" Retina MBP with exactly the same files.
I am a newbie to this, but it's a brand-new install on both machines. I've fixed permissions on the trashcan mac.
Thanks in advance!